Gyrator.



No. 631,254. Patented Aug. 27, Ism.

Aw. P. NonTHwAY.

GVRATOH.

(Application filed Jan. 28, 1901.) (No Model.) 3 Sheets-Sheet I.

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ma Nanms Evans co.. Puma No. 68|,254. Patented Aug. 27, I90l.

W. P. NDRTHWAY.

GYBATOR.

(Applicatxon-led `Jan. 28, 1901.)

(Nq Model.) 3 Sheets-Sheet 2.

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(Application filed Jan. 28, 1901.)

Nq. 681,254. vPafwnnm Aug. l27, |901.

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(No Modal.)

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PATENT EETCE.

WVINSLOYV 1). NORTHVAY, OF` MINNEAPOLIS, MINNESOTA.

GYRATO R.

SPECIFICATION forming part of Letters :Patent No. 681,254, dated August2'?, 1901.

` Application filed January 28,1901. serial 110.44.988. (Numana To allwhom it may concern:

tors, of which the following-is a specification.

My invention relates to devices for imparting a whirling or gyratorymotion to bodies i ro and to devices for guiding and restraining themovements of all portions of the body to circular courses of the samediameter; and its l" principal objects are to provide improved U rn'eansfor gyrating and guiding chop-graders and like separating and gradingmachines and by supporting the gyrating body directly upon the devicesthat guide'i'ts movement to p dispense with the hangers and similardevices lao usually employed in gyrating machines. Stated brieflyand igenerally, the machine comprises a main supporting-frame, a superposedbox or body, together with mechanism engaging it` centrally to gyrateit, and intermediate guides and slides arranged and adapted to operatein pairs at right angles to p each other for controlling the gyratorymovements of the extremities of the box or body.

` H p More specifically stated, the machine as a whole may be consideredas made up of three principal partsviz.`, the gyrated body, the

" base or frame adapted to support the operative parts, and anintermediate sliding and p guiding frame composed either of a single lss ,p Ways at the `four corners and resting on balls base-frame.

casting or of 'several parts secured together, provided with upper andlower grooved guideor rollers in guides on the four corners of the frameare at right angles to those on the baseframe which support it and arealso provided `With balls or rollers on which "the gyrated impartsmotion to that part in direction at a `right angle to the direction 4ofmovement of the bodyupon it,.because the sliding frame rests only on'theballs or rollers in the guides on the main frame, which are at rightangles The guides at the four corners on the upper surface of theintermediate to those on the upper surface of the sliding frame on whichthe gyrated body. moves. This compound motion controls the gyratorymot-ion given to the box, so that every portion of the gyrated box willbe restrained to circular motion of exactly the same extent andydirection as that imparted to it at its center.

In the accompanying drawings, Figure 1 is a side elevation of a machineembodying my improvements. Fig. 2 is an end elevation of the same. Fig.3 is a sectional elevation of the journal-box for the crank-pin whichimparts motion to the chop-grader. Fig. 4: is a plan viewof the same,the cap-plate having been removed.- Fig. 5 is a plan view illus- `trating diagrammatically the gyratory movements of the machine. Fig. Gis aside elevation showing portions of the base-frame, the box, and theintermediate sliding and guiding frame separated from one another. Fig.7 is a plan view of the sliding and guiding frame, and Fig. 8 is an endelevation of the same in position on the supporting-frame.4

In the drawings the main frame is shown as consisting of posts l andbars 2, connecting them. Bridge-trees 3 and 4 are provided4 for thesupport of a driving-shaft 5 and a vertical shaft 6, the shafts beingoperatively connected by beveled gears '7. The shaft 5 may be driven bya pulley 8 and belt 9, and the spindle 6 is stepped in a suitable box onthe bridge-tree 3 and has an upper bearing in a journal-box 10, mountedon the bridge-tree /1. On the upper end of the spindle l6 is a pin orprojection 11, extending upward parallel with, but located eccentricallyto, the axis of the spindle for engaging the base 12 of the box orbody13 to give it a gyratory motion. To provide a suitable bearing for thepin, a tubular box 14, having fianges 15, is secured Jin an opening inthe base 12 by bolts 16, extendingthrough the base and lianges l5. Inthe box 1-1 are upper and lower rings 17 and an intermediate ring 18,forming races for balls 19, with which the crank-pin 11 contacts. Theserings are loose, and the spaces 2O at their sides permit them to beeasily engaged for the purpose ofremoval or adjustment. A cap 21 is usedfor covering the box to exclude dirt, and set-screws 22, insertedthrough the cap, serve to prevent upward movement of the rings when thepin. is re- IOO volved. The step-box and the journal-box l0 for thespindle 6 should also be provided with suitable ball-bearings.

The whirling or gyratory movement given the box by the crank-pin at itscenter is restrained and controlled as to the sides and ends of the boxto cause all portions of the boxto describe the same circular movementby means of a sliding frame composed of guides and slides arranged andoperating between the gyrating box and the main supporting-frame. `Thissliding frame is mounted on stationary guides 23, arranged upon andsecured to the bars 2 of the machine-V frame. The guides 23 arepreferably supported by adjusting-screws 24 and have pendent flanges 25,that overlap the sides of the cross-pieces 2 of the frame. The screws24e enable the guides to be vertically adjusted for leveling themachine, and the flanges 25 prevent lateral displacement. The slidingframe intermediate the guides 23 and the gyrating box, which is operatedby the box and slides on the guides 23, comprises bars 26, extendingtransversely, and bars 30, extending longitudinally of themachine-frame, the latter bars being secured on the former by bolts 31or otherwise. The bars 26 and 30 thus constitute a frame, the lower bars26 of which are arranged to slide on the guides 23 and the upper bars 30of which support the box and provide guides in which it may reciprocatein directions at right angles to the direction of movement of thesliding frame on the guides 23.

In the end portions of the bars 26 and 30 and in the guides 23 areinserted ways or races 27 for balls or rollers 28. Guides 32 are securedby bolts or otherwise to the under surfaces of the box-corn ers, andthese guides, as are also the guides 23, are provided with ways 27 forballs 28. The end portions of the bars 26 have downward flanges 29,overlappingthe sides of the guides 23, to prevent lateral displacementduring the operation of the machine, and the slides 32 have similariianges 29, overlapping the sides of the bars 30, for the same purpose.

A suitable counterbalauce-wheel 34 is secured on the spindle 6, as nearas practicable to the bottom of the box 13.

In operation the rotation of the spindle 6 will cause the crank-pin Ilto impart to the central portion of the box 13 a circular or gyratorymotion, and its four corners will be restricted to si milar movements bythe guides. This is illustrated by the diagram, Fig. 5, in which the boxand crank-pin are arbitrarily shown in initial positions by full linesa, and their opposite extremes of movement are indicated by dotted linesb, c, and d. As the intermediate frame, composed of the bars 26 and 30,in operation slides on the guides 23 and as at the same time the guides32 on thebox-bottom slide on the frame at right angles to its movementsin the guides 23, it is obvious that the sides and ends of the box mustat allutimes during the travel of the crank-pin maintain positions onlines parallel with the lines of their initial positions, and

`as, their distance from the pin is vinvariable it follows that theextent and direction "of the movements of the box as a whole mustcorrespond with the throw of the crank-pin. This intermediate slidingand guiding frame and the means for operatively connecting it with thegyrator and base-frame may be varied considerably in structure withoutaffecting their mode of operation, and therefore I do not limit my claimto the specific form and structure of the devices shown and described.

In illustrating the means for producing and controlling the gyratorymotion I have not deemed it necessary to show in connection therewithanything more than a mere outlinev of a box or body 13, for while theimprovements were designed primarily for operating the class offlour-mill machines termed chopgraders I do not wish to confine theiruse to that or any particular class of machines.

Having described my invention, what I claim is- 1. The combination witha supporting base or frame, and a superposed gyrating body, of anintermediate slide supporting the latter on the former, and guidestherefor extending in directions at right angles to each other on thegyrator and base, substantially as set forth.

2. The combination with a supporting base or frame, and a superposedgyrating body', of centrally located means for gyrating the body, guidesarranged at right angles to each other, and a slide operated therein bythe gyrating body for controlling the movements of such body,substantially as set forth.l

3. The combination with a supporting base or frame, and a su perposedgyrating body,the former having guides on its upper surface and thelatter having guides at its under surface at right angles to the guideson the base, of an intermediate slide engaging said guides, for thepurpose set forth.

4. 'The combination with a gyrating body" having guides at its undersurface, of a slide engaging said guides and supported on other' guidesextending at right angles to the former guides, substantially as setforth.

5. The combination with a gyrating body having guides at its undersurface, and underlying independent guides extending at right anglesthereto, of an intermediate slide operated by the gyrating body andoperatively engaging such guides, substantially as set forth.

6. The combination with a gyrating body having guides at its undersurface, and 11nderlying independent guides extending at .right anglesthereto, of an intermediate slide operated by the gyrating body andoperatively engaging such guides, and ball or roller bearings for saidslide in said guides, sub-4 stantially as set forth.

'7. The combination with a gyratory body n having guideways at its undersurface, of a supporting frame, gnideways thereon arranged at `rightangles to the said guideways, intermediate slides secured together atright `angles to one another, and ball-bearings between said slides andguideways, and a shaft and crank-pin for imparting gyratory motion tosaid body, substantially as set forth.

8. In a gyrator, a supporting base or frame,

a gyratory body and means for gyrating it, a.

slide intermediate the base and gyratory body and supporting the latteron the former, and

\ straight-line guides on said base and body e is engaged by said slide,the guides on the base extending at angles to those on said body,

n substantially as set forth.

WINSLOW P. NORTHW'AY..

In presence of P. H. GUNOKEL, A. L. WHELAN.

